Kyosho Motorcycle Motor Pinion Set KM123TS 11T/12T/13T Tuning Pack by GPM  [KM123TS]

Motor pinion set for Kyosho Motorcycle use

This aftermarket motor pinion set is intended for Kyosho Motorcycle models. The kit supplies three steel #45 pinions in 11T, 12T and 13T counts as a 3pcs set to allow straightforward tuning swaps and replacement of worn motor pinions on small motorcycle platforms.

Pick the appropriate tooth count to alter the final drive characteristic: the included sizes let you experiment with quicker acceleration or a higher top speed while retaining the original spur or gearbox. Steel #45 balances strength and workability for motor pinions.

Fitment steps: release the motor pinion retention, fit the chosen pinion, check mesh with the spur or gearbox input, and confirm the motor turns freely before powering. Re-inspect mesh after initial running.